Comment by MPSimmons

Neither getting 40MW of power nor removing 40MW of heat are easy.

The ISS makes almost 250KW in full light, so you would need approximately 160 times the solar footprint of the ISS for that datacenter.

The ISS dissipates that heat using pumps to move ammonia in pipes out to a radiator that is a bit over 42m^2. Assuming the same level of efficiency, that's over 6km^2 of heat dissipation that needs empty space to dissipate to.

That's a lot.